397667304 has 24 divisors (see below), whose sum is σ = 1077015810. Its totient is φ = 132555744.

The previous prime is 397667299. The next prime is 397667363. The reversal of 397667304 is 403766793.

It can be written as a sum of positive squares in only one way, i.e., 372567204 + 25100100 = 19302^2 + 5010^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 397667304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2761507 + ... + 2761650.

Almost surely, 2^397667304 is an apocalyptic number.

It is an amenable number.

397667304 is an abundant number, since it is smaller than the sum of its proper divisors (679348506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397667304 is a wasteful number, since it uses less digits than its factorization.

397667304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5523169 (or 5523162 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 45.

The square root of 397667304 is about 19941.5973281982. The cubic root of 397667304 is about 735.3712188392.

The spelling of 397667304 in words is "three hundred ninety-seven million, six hundred sixty-seven thousand, three hundred four".